Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / sound / soc / mid-x86 / mfld_machine.c
blob429aa1be2cffa6ae8d73b3d3547373afb74fd2cd
1 /*
2 * mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform
4 * Copyright (C) 2010 Intel Corp
5 * Author: Vinod Koul <vinod.koul@intel.com>
6 * Author: Harsha Priya <priya.harsha@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/slab.h>
30 #include <linux/io.h>
31 #include <sound/pcm.h>
32 #include <sound/pcm_params.h>
33 #include <sound/soc.h>
34 #include <sound/jack.h>
35 #include "../codecs/sn95031.h"
37 #define MID_MONO 1
38 #define MID_STEREO 2
39 #define MID_MAX_CAP 5
40 #define MFLD_JACK_INSERT 0x04
42 enum soc_mic_bias_zones {
43 MFLD_MV_START = 0,
44 /* mic bias volutage range for Headphones*/
45 MFLD_MV_HP = 400,
46 /* mic bias volutage range for American Headset*/
47 MFLD_MV_AM_HS = 650,
48 /* mic bias volutage range for Headset*/
49 MFLD_MV_HS = 2000,
50 MFLD_MV_UNDEFINED,
53 static unsigned int hs_switch;
54 static unsigned int lo_dac;
56 struct mfld_mc_private {
57 struct platform_device *socdev;
58 void __iomem *int_base;
59 struct snd_soc_codec *codec;
60 u8 interrupt_status;
63 struct snd_soc_jack mfld_jack;
65 /*Headset jack detection DAPM pins */
66 static struct snd_soc_jack_pin mfld_jack_pins[] = {
68 .pin = "Headphones",
69 .mask = SND_JACK_HEADPHONE,
72 .pin = "AMIC1",
73 .mask = SND_JACK_MICROPHONE,
77 /* jack detection voltage zones */
78 static struct snd_soc_jack_zone mfld_zones[] = {
79 {MFLD_MV_START, MFLD_MV_AM_HS, SND_JACK_HEADPHONE},
80 {MFLD_MV_AM_HS, MFLD_MV_HS, SND_JACK_HEADSET},
83 /* sound card controls */
84 static const char *headset_switch_text[] = {"Earpiece", "Headset"};
86 static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"};
88 static const struct soc_enum headset_enum =
89 SOC_ENUM_SINGLE_EXT(2, headset_switch_text);
91 static const struct soc_enum lo_enum =
92 SOC_ENUM_SINGLE_EXT(4, lo_text);
94 static int headset_get_switch(struct snd_kcontrol *kcontrol,
95 struct snd_ctl_elem_value *ucontrol)
97 ucontrol->value.integer.value[0] = hs_switch;
98 return 0;
101 static int headset_set_switch(struct snd_kcontrol *kcontrol,
102 struct snd_ctl_elem_value *ucontrol)
104 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
106 if (ucontrol->value.integer.value[0] == hs_switch)
107 return 0;
109 if (ucontrol->value.integer.value[0]) {
110 pr_debug("hs_set HS path\n");
111 snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
112 snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
113 } else {
114 pr_debug("hs_set EP path\n");
115 snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
116 snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
118 snd_soc_dapm_sync(&codec->dapm);
119 hs_switch = ucontrol->value.integer.value[0];
121 return 0;
124 static void lo_enable_out_pins(struct snd_soc_codec *codec)
126 snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL");
127 snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR");
128 snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL");
129 snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR");
130 snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT");
131 snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT");
132 if (hs_switch) {
133 snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
134 snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
135 } else {
136 snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
137 snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
141 static int lo_get_switch(struct snd_kcontrol *kcontrol,
142 struct snd_ctl_elem_value *ucontrol)
144 ucontrol->value.integer.value[0] = lo_dac;
145 return 0;
148 static int lo_set_switch(struct snd_kcontrol *kcontrol,
149 struct snd_ctl_elem_value *ucontrol)
151 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
153 if (ucontrol->value.integer.value[0] == lo_dac)
154 return 0;
156 /* we dont want to work with last state of lineout so just enable all
157 * pins and then disable pins not required
159 lo_enable_out_pins(codec);
160 switch (ucontrol->value.integer.value[0]) {
161 case 0:
162 pr_debug("set vibra path\n");
163 snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT");
164 snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT");
165 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0);
166 break;
168 case 1:
169 pr_debug("set hs path\n");
170 snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
171 snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
172 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22);
173 break;
175 case 2:
176 pr_debug("set spkr path\n");
177 snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL");
178 snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR");
179 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44);
180 break;
182 case 3:
183 pr_debug("set null path\n");
184 snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL");
185 snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR");
186 snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66);
187 break;
189 snd_soc_dapm_sync(&codec->dapm);
190 lo_dac = ucontrol->value.integer.value[0];
191 return 0;
194 static const struct snd_kcontrol_new mfld_snd_controls[] = {
195 SOC_ENUM_EXT("Playback Switch", headset_enum,
196 headset_get_switch, headset_set_switch),
197 SOC_ENUM_EXT("Lineout Mux", lo_enum,
198 lo_get_switch, lo_set_switch),
201 static const struct snd_soc_dapm_widget mfld_widgets[] = {
202 SND_SOC_DAPM_HP("Headphones", NULL),
203 SND_SOC_DAPM_MIC("Mic", NULL),
206 static const struct snd_soc_dapm_route mfld_map[] = {
207 {"Headphones", NULL, "HPOUTR"},
208 {"Headphones", NULL, "HPOUTL"},
209 {"Mic", NULL, "AMIC1"},
212 static void mfld_jack_check(unsigned int intr_status)
214 struct mfld_jack_data jack_data;
216 jack_data.mfld_jack = &mfld_jack;
217 jack_data.intr_id = intr_status;
219 sn95031_jack_detection(&jack_data);
220 /* TODO: add american headset detection post gpiolib support */
223 static int mfld_init(struct snd_soc_pcm_runtime *runtime)
225 struct snd_soc_codec *codec = runtime->codec;
226 struct snd_soc_dapm_context *dapm = &codec->dapm;
227 int ret_val;
229 /* Add jack sense widgets */
230 snd_soc_dapm_new_controls(dapm, mfld_widgets, ARRAY_SIZE(mfld_widgets));
232 /* Set up the map */
233 snd_soc_dapm_add_routes(dapm, mfld_map, ARRAY_SIZE(mfld_map));
235 /* always connected */
236 snd_soc_dapm_enable_pin(dapm, "Headphones");
237 snd_soc_dapm_enable_pin(dapm, "Mic");
238 snd_soc_dapm_sync(dapm);
240 ret_val = snd_soc_add_controls(codec, mfld_snd_controls,
241 ARRAY_SIZE(mfld_snd_controls));
242 if (ret_val) {
243 pr_err("soc_add_controls failed %d", ret_val);
244 return ret_val;
246 /* default is earpiece pin, userspace sets it explcitly */
247 snd_soc_dapm_disable_pin(dapm, "Headphones");
248 /* default is lineout NC, userspace sets it explcitly */
249 snd_soc_dapm_disable_pin(dapm, "LINEOUTL");
250 snd_soc_dapm_disable_pin(dapm, "LINEOUTR");
251 lo_dac = 3;
252 hs_switch = 0;
253 /* we dont use linein in this so set to NC */
254 snd_soc_dapm_disable_pin(dapm, "LINEINL");
255 snd_soc_dapm_disable_pin(dapm, "LINEINR");
256 snd_soc_dapm_sync(dapm);
258 /* Headset and button jack detection */
259 ret_val = snd_soc_jack_new(codec, "Intel(R) MID Audio Jack",
260 SND_JACK_HEADSET | SND_JACK_BTN_0 |
261 SND_JACK_BTN_1, &mfld_jack);
262 if (ret_val) {
263 pr_err("jack creation failed\n");
264 return ret_val;
267 ret_val = snd_soc_jack_add_pins(&mfld_jack,
268 ARRAY_SIZE(mfld_jack_pins), mfld_jack_pins);
269 if (ret_val) {
270 pr_err("adding jack pins failed\n");
271 return ret_val;
273 ret_val = snd_soc_jack_add_zones(&mfld_jack,
274 ARRAY_SIZE(mfld_zones), mfld_zones);
275 if (ret_val) {
276 pr_err("adding jack zones failed\n");
277 return ret_val;
280 /* we want to check if anything is inserted at boot,
281 * so send a fake event to codec and it will read adc
282 * to find if anything is there or not */
283 mfld_jack_check(MFLD_JACK_INSERT);
284 return ret_val;
287 struct snd_soc_dai_link mfld_msic_dailink[] = {
289 .name = "Medfield Headset",
290 .stream_name = "Headset",
291 .cpu_dai_name = "Headset-cpu-dai",
292 .codec_dai_name = "SN95031 Headset",
293 .codec_name = "sn95031",
294 .platform_name = "sst-platform",
295 .init = mfld_init,
298 .name = "Medfield Speaker",
299 .stream_name = "Speaker",
300 .cpu_dai_name = "Speaker-cpu-dai",
301 .codec_dai_name = "SN95031 Speaker",
302 .codec_name = "sn95031",
303 .platform_name = "sst-platform",
304 .init = NULL,
307 .name = "Medfield Vibra",
308 .stream_name = "Vibra1",
309 .cpu_dai_name = "Vibra1-cpu-dai",
310 .codec_dai_name = "SN95031 Vibra1",
311 .codec_name = "sn95031",
312 .platform_name = "sst-platform",
313 .init = NULL,
316 .name = "Medfield Haptics",
317 .stream_name = "Vibra2",
318 .cpu_dai_name = "Vibra2-cpu-dai",
319 .codec_dai_name = "SN95031 Vibra2",
320 .codec_name = "sn95031",
321 .platform_name = "sst-platform",
322 .init = NULL,
326 /* SoC card */
327 static struct snd_soc_card snd_soc_card_mfld = {
328 .name = "medfield_audio",
329 .dai_link = mfld_msic_dailink,
330 .num_links = ARRAY_SIZE(mfld_msic_dailink),
333 static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev)
335 struct mfld_mc_private *mc_private = (struct mfld_mc_private *) dev;
337 memcpy_fromio(&mc_private->interrupt_status,
338 ((void *)(mc_private->int_base)),
339 sizeof(u8));
340 return IRQ_WAKE_THREAD;
343 static irqreturn_t snd_mfld_jack_detection(int irq, void *data)
345 struct mfld_mc_private *mc_drv_ctx = (struct mfld_mc_private *) data;
347 if (mfld_jack.codec == NULL)
348 return IRQ_HANDLED;
349 mfld_jack_check(mc_drv_ctx->interrupt_status);
351 return IRQ_HANDLED;
354 static int __devinit snd_mfld_mc_probe(struct platform_device *pdev)
356 int ret_val = 0, irq;
357 struct mfld_mc_private *mc_drv_ctx;
358 struct resource *irq_mem;
360 pr_debug("snd_mfld_mc_probe called\n");
362 /* retrive the irq number */
363 irq = platform_get_irq(pdev, 0);
365 /* audio interrupt base of SRAM location where
366 * interrupts are stored by System FW */
367 mc_drv_ctx = kzalloc(sizeof(*mc_drv_ctx), GFP_ATOMIC);
368 if (!mc_drv_ctx) {
369 pr_err("allocation failed\n");
370 return -ENOMEM;
373 irq_mem = platform_get_resource_byname(
374 pdev, IORESOURCE_MEM, "IRQ_BASE");
375 if (!irq_mem) {
376 pr_err("no mem resource given\n");
377 ret_val = -ENODEV;
378 goto unalloc;
380 mc_drv_ctx->int_base = ioremap_nocache(irq_mem->start,
381 resource_size(irq_mem));
382 if (!mc_drv_ctx->int_base) {
383 pr_err("Mapping of cache failed\n");
384 ret_val = -ENOMEM;
385 goto unalloc;
387 /* register for interrupt */
388 ret_val = request_threaded_irq(irq, snd_mfld_jack_intr_handler,
389 snd_mfld_jack_detection,
390 IRQF_SHARED, pdev->dev.driver->name, mc_drv_ctx);
391 if (ret_val) {
392 pr_err("cannot register IRQ\n");
393 goto unalloc;
395 /* register the soc card */
396 snd_soc_card_mfld.dev = &pdev->dev;
397 ret_val = snd_soc_register_card(&snd_soc_card_mfld);
398 if (ret_val) {
399 pr_debug("snd_soc_register_card failed %d\n", ret_val);
400 goto freeirq;
402 platform_set_drvdata(pdev, mc_drv_ctx);
403 pr_debug("successfully exited probe\n");
404 return ret_val;
406 freeirq:
407 free_irq(irq, mc_drv_ctx);
408 unalloc:
409 kfree(mc_drv_ctx);
410 return ret_val;
413 static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
415 struct mfld_mc_private *mc_drv_ctx = platform_get_drvdata(pdev);
417 pr_debug("snd_mfld_mc_remove called\n");
418 free_irq(platform_get_irq(pdev, 0), mc_drv_ctx);
419 snd_soc_unregister_card(&snd_soc_card_mfld);
420 kfree(mc_drv_ctx);
421 platform_set_drvdata(pdev, NULL);
422 return 0;
425 static struct platform_driver snd_mfld_mc_driver = {
426 .driver = {
427 .owner = THIS_MODULE,
428 .name = "msic_audio",
430 .probe = snd_mfld_mc_probe,
431 .remove = __devexit_p(snd_mfld_mc_remove),
434 static int __init snd_mfld_driver_init(void)
436 pr_debug("snd_mfld_driver_init called\n");
437 return platform_driver_register(&snd_mfld_mc_driver);
439 module_init(snd_mfld_driver_init);
441 static void __exit snd_mfld_driver_exit(void)
443 pr_debug("snd_mfld_driver_exit called\n");
444 platform_driver_unregister(&snd_mfld_mc_driver);
446 module_exit(snd_mfld_driver_exit);
448 MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver");
449 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
450 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
451 MODULE_LICENSE("GPL v2");
452 MODULE_ALIAS("platform:msic-audio");